EP 1674727 B1 20130724 - Trochoid oil pump
Title (en)
Trochoid oil pump
Title (de)
Innenzahnradpumpe
Title (fr)
Pompe à engrenage interne
Publication
Application
Priority
JP 2004378193 A 20041227
Abstract (en)
[origin: EP1674727A1] A trochoid oil pump, which enables the endurance to be increased and the reduction of discharge pulsations and noise to be achieved, and in which those results can be realized with a very simple structure. An interdental space (S) constituted by an inner rotor (5) and an outer rotor (6) having trochoid tooth profile or substantially trochoid tooth profile starts a compression stroke in the location of a partition section between an intake port (2) and a discharge portion, and a linking gap (L) is composed by the interdental space and a preceding adjacent interdental space realized in a discharge stroke. The linking gap expands gradually from the start of compression stroke to the discharge stroke.
IPC 8 full level
F04C 2/08 (2006.01); F04C 2/10 (2006.01); F04C 15/00 (2006.01)
CPC (source: EP US)
F04C 2/084 (2013.01 - EP US); F04C 2/102 (2013.01 - EP US); F04C 15/0007 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 1674727 A1 20060628; EP 1674727 B1 20130724; CN 1796787 A 20060705; CN 1796787 B 20100609; HK 1094241 A1 20070323; JP 2006183569 A 20060713; JP 4319617 B2 20090826; US 2006140809 A1 20060629; US 7488163 B2 20090210
DOCDB simple family (application)
EP 05257923 A 20051221; CN 200510134127 A 20051226; HK 06114078 A 20061221; JP 2004378193 A 20041227; US 31244405 A 20051221